Flat Performance Curve

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Hello,

For a ASHRAE 90.1 Energy Cost Budget model, 11.3.2.b says the following:

"All HVAC and service water heating equipment in the budget building shall be modeled at the minimum efficiency levels, both part load and full load, in accordance with 6.4 and 7.4."

Should I interpret this to mean the efficiency is constant with respect to part load ratio? Therefore, a hot water boiler <300,000 Btu/h should have an efficiency of 80% at all operating points (Table 6.8.1F)? How do I enter a flat performance curve for a boiler in eQUEST?

Thanks,

Brian Tysoe M.A.Sc., P.Eng., LEED AP

Brian Tysoe M.A.Sc., P.Eng., LEED AP Associate, National Manager of Energy Modelling Services MCW Consultants Ltd. Queen’s Quay Terminal 207 Queen’s Quay West, Suite 615 Toronto, ON, Canada M5J 1A7 Phone: (416) 598-2920 ext:519 Fax: (416)
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